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Project Info ACTIVE Project Title

Dual-Purpose – Heating & Cooling – Thermal Battery for Flexible and Energy Efficient Heat Pump Systems

Project Number ET22SCE0005 Organization SCE End-use HVAC Sector Residential Project Year(s) 2022 - 2024
University of Maryland (Prime), EPRI, Sunamp, Heat Technologies, ORNL, Rheem is developing a technology consisting of a dual-purpose (heating and cooling) thermal battery with room temperature storage integrated with heat pump(s) (HP’s), for both residential and commercial applications. The thermal battery serves as the heat reservoir that absorbs heat when operating as condenser in cooling mode or rejects heat when operating as evaporator in heating mode. The system may be configured as a single HP with one compressor (preferably two-stage) or two compressors, or two separate HP’s with dedicated compressors.
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  • Sacramento Municipal Utility District logo
  • Los Angeles Department of Water and Power logo
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The ETCC is funded in part by ratepayer dollars and the California IOU Emerging Technologies Program, the IOU Codes & Standards Planning & Coordination Subprograms, and the Demand Response Emerging Technologies (DRET) Collaborative programs under the auspices of the California Public Utilities Commission. The municipal portion of this program is funded and administered by Sacramento Municipal Utility District and Los Angeles Department of Water and Power.